Typewriting machine



Oct. 7 1924.

M. PFAU TYPEWRITING MACHINE Filed Jan. 16, 192.. 5v Sheets-Sheet 1 V 1 llll| l l l l l I l I l n l I l I l I l l l l l l i l I l! www 167 VJ Z W. e n fw. vPv /a U l www. nf 1m. 1f. j@ A I ,WJ Ww a .l /f/l/IILJ fY M.PFAU

TYPEWRITING MACHINE 1923 5 Sheets-Sheet 2 Filed Jan. 16

Jzvenfor:

Oct. 7, 1924. 1,510,797

Ni. PFAU TYPEWRITING MACHINE Filed Jan. 16, 1922.

5 Sheets-Smet 5 Jnventar hzesses: l Ma "7 Oct. 7 ."1924.

M. PFAU TYPEWRITING MACHINE Filed Jan. 16. 1922 5 Sheets-Sheet 4.

Jnvenor: l

A f orney ci, 7 1924. M PFAU Y l,510,797

TYPEWRITING- MACHINE 'Filed Jan. 16, 1922 5 Sheets-Shet 5 Patented Oct. 7, 1924.

UNITED MAX PEAU, F CHEMNITZ, GERMANY.l 1 I TYPEWRITING MACHINE.

Application filed January 16, 1922.

To all 'whom t may concer/n.:

Be it known that I, MAx PEAU, a citizen of Germany, residing at Chemnitz, Germany, have invented certain new and useful Improvements in Typewriting Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in typewritingmachines, and the obj ect of theimprovementsy is to provide a machine in which certain mechanismfdisposed internally of the frame of the machine can readily be adjusted and repaired. With this object in view my invention consists in mounting vsuch parts on 'a sectional frame which is removably secured to the main frame section, so that the 2 said parts can readily be dismounted and adjusted independently of the main frame sec* tion and the parts mounted thereon. In the practice of the invention I mount the universal bar and the parts controlled thereby and preferably Certain other parts such as the back spacing mechanism and the carriage spring and its housing on the subsidiary frame section. In the preferred form the said subsidiary frame section also has the rear carriage supporting rail secured thereto, so that after dismounting the carriage and the subsidiary frame section access can be had to the inner parts of the machine. In order that my invention be more clearly understood an example embodying the same has been shown in the accompanying drawings, in which the same reference characters have been used in all the views to indicatecorresponding parts. In said drawings.,

Fig. 1, is a'frontview of the subsidiary frame section and the partsmounted thereon and showing in dotted lines a transverse section of the main frame section, l,

Fig. 2, is a side view of the subsidiary frame section and the parts mounted thereon, and showing in dotted lines the paper carriage,`the platen, and parts of certain mechanisms mounted on the main frame section and cooperating with the parts mounted on the subsidiary frame section, f

Fig. 3, is a plan view ofFig. 1, v Fig. d, is a side view of the rear part of Serial No. 529,616.

mais? the main frame section and the subsidiary f frame section with the mechanisms removed,

Fig. 5, is a vertical section taken on the line 5-5 of Fig. 1,

Fig. 6, is a front view fra-me section, l

Fig. 7 is a vertical section taken on the line 7 7 of Fig. 6, and f Fig. 8, is a side view of the main and subsidiary frame sections and the paper carriage and platen mounted thereon.

In describing the invention reference will be made to a type-writing machine of the Underwood type. But I wish it to be understood that my invention is not limited to the use in connection with the type shown in the drawings. y

In the example shown in the figures the frame of the typewriting machine consists of a main section a having feet al and a subsidiary section Z) secured to the upper rear part a2 of the v'main section by means of screws?)1 or the like, the construction being such that the subsidiary section with the mechanisms carried thereby can readily be mounted or dismounted for assembling and adjusting the said mechanisms independently of the main section of the frame. As appears more particularly from Figs.v 4 to 8. the subsidiary section consists of a horizontal portion b2 generally of U-shaped cross-sec tion, lateral arms b3, and arms b4 extending rearwards and upwards from the ends of the arms b3. From the middle of the transverse part Z22 there depends a part b5 of rectangular form, and to the depending arms a pair of brackets Zn are secured which extend therefrom forwards and .towards'the keyboard side of the machine. Laterally of the frame part b5 a Z-shaped bracket fb? is secured to the upper flange of the horizontal part b2, which bracket is locatedA at .thev front side of the part b2 and extends therefrom downwards. y The upper flange of the part b2 is curved upwards and downwards as at 61 to provide a housing for certain parts connected with the escapement mechanism, and

near one of the ends of the part b2 the.k

upper and lower flanges are enlarged'at 611 and the web is formed with a circular hole 612 to accommodate the carriage spring and its housing 7c. j A

of the i subsidiary l On the subsidiary trame and `its brackets the following mechanisms are mounted: To the arms Z/t the rear guide rail c1 for the paper carriage c is secured by means of screv-,fs c2. The platen c3 and the paper carriage c have been shown in F ig. 2 in dotted lines. rlhe bracket 66 provides a support for the universal bar CZ which as shown is secured to a horizontal U-shaped 'trame Z1 guided with horizontal slots Z2 on pins (Z3 secured to the front ends of the arms Z9 and jointed at its rear end to arms Z4 oli a rocker Z5 mounted on a shaft Z secured to the arms 6G. A spring Z7 secured with one end to a hook Z8 connected with said rocker and with the opposite end to a lug Z9 provided at the front end ot the arm Zi tends to push the rocker Z5 and the universal bar Z forwards.

The universal bar is adapted to be reciprocated by the type levers )c shown in Fig. 2 in dotted lines, as is known in the art.

To the rocker Z5 a lever c is secured which takes part in the rocking movement imparted to the rocker by the type levers acting on the universal bar, and transmits such rocking movement through the intermediary et a lever c1 and a connecting rod c2 jointed thereto to the ribbon Jreed mechanism (not shown).

On the portion 510 of the frame part Z22 the escapement wheel g, the clutch .f/l anc the gear wheel g2 cooperating with the usual carriage rack (not shown) are mounted, and at the rear side ol the part the carriage brake disk g3 is provided.

The movement ot' the escapement wheel (7 is controlled in the usual way byf escape ment pawls gt, g5 mounted on a carrier gG having a rocking support between pointed screws gl screwing in eyes g8 oit the bracket 5G. The rocking carrier g is acted upon by the universal bar through 'the intermediary of a slide g1@ transversely shittable on a pair ot transverse rods g and gm ot the traine Z1 and carryingan adjustable plate 9113. Furthermore, the carrier (/6 is adapted to be operated independently ot the universal bar from the spacing key acting through. the intermediary of a lever g and an arm 715 secured to the carrier. y

rlhe slide glo is adapted to be shifted transu versely of the frame Z1 by means of a rod Zz guided longitudinally of the trame section E and engaging an arm Ztl of the slide g1", and such movement is imparted to the slide for throwingthe ribbon vibrator into or out of operation. fis shown a slotted plate it? is secured to the slide which is adapted toe-ngage a pin if secured to an arm la* of a lever h5 connected with the ribbon vibrator (not shown). i

On the arm 57 the back spacing mechanis is mounted which as shown consists of a lever z' rockingly mounted at l and carrying a dog i2, and an operating lever s likewise mounted at l and jointed with its upper end to the dog 2. The lever isloosely connecte ed with the back spacing mechanism (not shown).

lf it is desired to dismount the subsidiary trame and the parts mounted thereon, l disconnect the ribbon vibrator trom the slotted plate ft2 by means ot the rod Zz, and l remove the screws 1.

The parts mounted on the main trame ot the machine are in loose engagement with the parts mounted on the subsidiary trame. Therefore, when mounting` the subsidiary :trame on the main frame it is necessary onl)y to throw the parts 7a2 and h3 into engagement with each other, whereupon the machine is ready for use.

wWhile in describing the invention reference has been made to a particular example embodying the same, I wish-it to be understood that my invention is not limited to the construction shown in the drawings, and 'that various changes may be made in the general arrangement of thek apparatus and the construction oit its parts without depart ing from the invention.

I claim:

l. In a typewriting machine, the combination, witha main frame section, and a subsidiary trame section removably connected therewith, of the type levers and type levez' operating mechanism both mounted on the main section, and the universal bar and escapement mechanism both mounted on the subsidiary :trame section.

f2. ln a typewriting machine, the. combination, with a main trame section, and a subsidiary frame section removably connected therewith, of the type levers, type lever operating mechanism, and a spacing key lever all mounted on the main section, and the universal bar and escapement mechanism both mounted on the subsidiary trame sec-- tion, said escapement mechanism comprising an operating member adapted to be open ated by said spacing key lever and independent of the universal bar.

3. ln a typewriting machine, the combination, with a main frame section, and a subsidiary frame section removably connected therewith, oit the type levers, type lever mechanism, and a spacing key lever all mount-- ed on the main framesection, and the universal bar and escapement mechanism both mounted on the subsidiary frame section, said escapement mechanism comprising an operating member in loose operative engagement with said spacing key lever and independent ot the universal bar.

el. In a typewriting machine, the combination, with a main frame section, and a subsidiary frame section removably connected therewith, oi the type levers, type lever operating mechanism, ribbon spools, ribbon feed mechanism, and ribbon vibrator all mounted on said main frame section, and the universal bar, operating means for the ribbon i feed mechanism, and operating means for the vibrator mounted on the subsidiary frame section. v

5. In a typewriting machine, the combination, with a main frame section, and a subsidiary frame section removably connected therewith, of the type levers, type lever operating mechanism, ribbon spools, ribbon feed mechanism, and ribbon vibrator all mounted on said main frame section, the universal bar operating means for the ribbon feed mechanism and operating means for the vibrator mounted on the subsidiary frame section, and means to disconnect said vibrator from the operating means therefor, said ribbon feed mechanism and its operating means being in loose engagement with each other.

6.1In a typewriting machine, the combination, with a main frame section, and a ,subsidiaryl frame section removably connected therewith, of the type levers, type lever operating mechanism, and operating means for the back spacing means all mounted on the main frame section, and the universal bar, escapement mechanism, and back spacing mechanism all mounted on the subsidiary frame section, said back spacing mechanism and its operating means being in loose engagement with each other.

7. In a typewriting machine, the combination, with a main frame section, and a subsidiary frame section removably connected therewith, of the type levers and type lever mechanism both mounted on the main frame section, and a rear carriage supporting rail, the universal bar and escapement mechanism all mounted on the subsidiary frame section, the front carriage supporting rail being mounted on the main frame section.

8. In a typewriting machine, the combination, with. a main frame section, and a subsidiary frame section removably connected therewith and exclusively supported thereclusively to the upper rear part of said mainl frame section, ofthe type levers and type lever mechanism mounted on the main frame section, and the universal bar and escapeframe section.

10. In a typewriting machine, the combination, with a main framesection comprising a base portion, upright corner pieces and integral-longitudinal portions connecting the corner pieces at their top parts, and

a subsidiaryv frame section substantially in the form of a bar and removably connected exclusively to the upper rear part of said main frame section, of the type levers and type lever mechanism ymounted on the main l section, and the universal bar and escapement mechanism mounted on the subsidiar frame section. v

11. In a typewriting machine, the combination, with a main frame section, and a subsidiary frame section substantially in the form of a bar formed with a depending portion and removably connected exclusively to the upper rear part of said main frame section of the type levers yand type lever mechanisni mounted on the main section, brackets secured to said depending portion and pro` jecting forwardly therefrom, the universal bar mounted on said brackets, and escapement mechanism mounted on said brackets and subsidiary frame section.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

v MAX PFAU. Witnessesz L. ZIMMERMANN,

W. E. DRIscoLL.

6o ment mechanism mounted on the subsidiary v 

